The Tour de France is an exciting bicycle race and Google just made it more interactive than ever.  By entering Your Tour you can experience the Tour de France like never before.  Learn about each stage before exploring it.  When you click explore the stage, you simply scroll through the whole track.  When you scroll your mouse down there are videos, street view images, Google+ messages, maps and elevation changes that are very interesting.  I do not pay much attention to the Tour de France but this got me a little more excited about the sport.  I encourage you to share with site with your students.